Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4dcc2f506575ad3c8f7d5db131435c78e4c369611c4610b4cdc3c8346384648b' 
  AND token = 'X05maOVo29wGnX3SRWjJarRUKMfYKYZBQdRE75h71m8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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