Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '051c0f3a697447ea2d4dfa245693038ef957e408a8cce8156378855bd97af3d5' 
  AND token = 'zG2uqnb5eVuhWWi74+e5l6R+PSIWhX592T664Y3a7KU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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