Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '898145cb11144afbe31904331a4d0ab697df1ce47a59bc9361bff5a993735c14' 
  AND token = 'I8c0UN5pLyMUAB0Q55vvNwvS2PzxVgtxxHu/lVHLkAM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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