Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '457eb984e21b9ff8aed708807004760a0ab673f5332c07cdca4bf88c7737fe7e' 
  AND token = 'Qp8StaRgK+HdTTOYzsS9IFOmqQevjzsrnN7xNmKWjBo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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