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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '84c426ab752d49d6e8bb267bbaa4a1756cefda3370217466609d44843d11433c' 
  AND token = 'rpkRc9p2hLAtHIhiETDwSi7k4T2b36DKMI4DH2GYHvc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}