Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e53151b7df671999931707e6db58663c1bc43e0b30d62199f626413d771ebaa7' 
  AND token = 'orQLPUvsZXzi/CltDAKUsaS1KzR0wBwcL+be37K2yGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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