Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd6b7282d03c18c0c468ab58c4eff6d29a02075bb5e867a578061ddd219fa372e' 
  AND token = 'sgk6bzyBfow+0R/gmVB66tOkizC1rWowRa9PCemOFN8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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