Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74e912d1ad9ccd4d4baf846f275a5126a708736478cca8343af76cde2505b725' 
  AND token = 'QdFiCMpv6OnxLkl6YZZlLVluHeR1n/FecF/FB85dAH4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}