Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9380d2c3ef2073263b3cd9d0ac982e2cba17381f496c7213db363aaff14e5db0' 
  AND token = 'y3iY7dEUHy4JtbvQZcFSzBs6GZR5BzN7UXd3Lj3Q5mY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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