Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73da286b93c2bbbd92283d8d2553824a349adee13e841feebea91756cbdc1dc4' 
  AND token = '89kKuXOhAFbTMuMwANfE9EFJJnYM7DcLqDBuGxoh3Dc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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