Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5ec3e659fe467349119b81dd546c09d1210203e26629faa9c5df777fd5cb0357' 
  AND token = 'Q/3gsG0+BS1O1LgluB6lTda2o54n2/8ZLUk8P6QdpEA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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