Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f4f219fe15902ac5c42866aae3158af0e648580ac14735ebb5c9b73c50e9f83a' 
  AND token = 'zocuwDOZ4vy8AQffm0hCCXjQ1ePfYm3EL1ypEo0F8BI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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