Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f133c88b3fb05b2499a31218d94f2ad178233f82213740dfa77996add751b724' 
  AND token = 'ZmmCFPSdHy3ltVjqnmsuFS8bhkxM6jGXpj3X2PwO2EY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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