SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '753e758f0c23df3f4b7a47fbbd82cfa21fd5db21991108cff1c8df12722c9e69' 
  AND token = 'I+SsYNjUY2dt8m9zBytCA7feumqhDwE8BF/g/b1lTOk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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