Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2f62c7cc6e565f24e6adebe2bfbbfa45bae845a46bf2a3e1ec91d2499aee45d' 
  AND token = 'hrYhfnkuqwEtbh94L6g2Ht5v95zhnGtMJgvsLldSFlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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