Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd8ce45b298d5bef3900370cb1df6069d45a1f2bd10c93dcefa75cd512d108262' 
  AND token = 'atbyqkTJhHglIHX0QtSoKDn1MThQv9OysU4mMBCfrfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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