Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf401c54e665082b57d581fe380ebd49ed8b62e11961ae0539086a23cb11c5f2' 
  AND token = '+zRtMXiQ5vrsa1e7+40IlpwzlLJITdJIbsC2M3ZSr+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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