Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69c7601980b873434d903e6bd78a367ff1c0870a06a40336f8dccbc3a1c61133' 
  AND token = '+m3AFaVwccK9tCoucUhEafyx7VqWfPhhZ3mczudYax8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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