Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4020c969a9f5db611f706d11760fec90981565cc8651588ad8b17de44042a730' 
  AND token = 'A+52fvyygb+t5JLk08Rdj7+yuLgQNE48nyClpBt1gTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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