Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1633c2086fad03a7e6ad332cda8207e11347e4b2cba035eb878c73525b424295' 
  AND token = 'SQZj45a4cEJdJAIAnkb7rNsMz83r6t82YvV7zJwKf0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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