Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8866726de13ee858d20586b9368ca757b1f9592a49fcf597d6b909289b190f49' 
  AND token = 'HGdTW5a+SBE7hp6P9kl4FDoE71tEs52pUtXWhMfl4+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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