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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e926267511ecd8685f467e73d1d6ae2423f19e7a23e18b71fd23b1caf33627be' 
  AND token = 'gUVRgklA592MpJwnU1awZFzL0p7gpMZPb7tiUYuhijM=' 
  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"
    }
  }
}