Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11d4272ae32042744e34e9b125c3c36b287dde0cd47b8c834cc845e70d7ac87a' 
  AND token = '5jI31z6+zv4IT4jo2N7cWEImDcVkjR5vQmES8WFb8ik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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