Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '102f22a9f8bf9959a0919f60ea550eaa5435cecba8401236316eeb4115dd26be' 
  AND token = 'RQ7hR71RGV4/7qORVHumXYpDQlmx+SbRuX2cOImIGHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}