Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c30ac7a749a534c9fb6ba8ad680ab7ceef32e91376a1caccd17281b6f786820e' 
  AND token = 'KsCpd9x/M2asY9EWZVKN9cW0z7C/aAQVPO+VPjDxbbU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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