SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7a04cb8cd97f63c2ce370b3404595f17ce40875780f17f04b1904985d8a56570' 
  AND token = 'Zx/GSMXXZCcDMm2IrnoMtuHYH28vTO+Z/HaUgCnwEPc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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