Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8377f66c5c489e4c6791cf61caf8e899b14cab194b3a474b57a99d6566f53837' 
  AND token = 'xxHM2RFLJ2XNqPkaB2F0pNO5X69nNVZFTh4E94LfJ3M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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