Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '06d7d50ec9005f831c03e9c04e90d224ff666bb8362f063c24897dc46158def4' 
  AND token = 'szeHRyLOtVIphqNLF+nRbeO0RvyVqL6vzBVVAW1b3Yo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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