Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cdabf2eb11e6a0bb891327f53a9418f16e62a479ca1d509fc360417f9307479' 
  AND token = '65lzVhsJwYpCztP+6z0Mzw9piWhRkb0cseor69Qgm9I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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