Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e87817c6425be89debfc248793b16a580c959b845babab067ac43c06bacce7b1' 
  AND token = '/RlqyhxuAzen6pr7uYzB1jDrAg5f3Ghb+NfADYb1vBs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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