Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '285eb069296f40fcb589d9f41f531e82125bbbca4626d732dbef8f2a5685c78b' 
  AND token = 'ACuZbN3ujDWIkfqgofsihaLUZK8Z9Vc21nE6MGvsLHo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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