Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27bb9b68b10958e9e1659168dd79baf60464dce4236d7f811ecc8008c1229740' 
  AND token = 'b14FkS0ogGkL7Ngl3Zeqed0kTB6dhex1/Lpqem/JwYc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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