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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '9665c2529eeb9baa09906d07085604eac0dd2ac094cd921d5928d43b40fba41a' 
  AND token = 'jl6kJlu3+AG67KnKhALicqtK/Ntf4sWrZaLL4VGwOic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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