Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00c65000e199c59b457a78b773305f86dcfe0f1955d0ece6b1dc5afdda9d7a13' 
  AND token = '3lJYMEImsXP3+gTpMJsPdSNQ+o3n14ETgBBn2LygFcY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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