Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e29ae09641af68c9e4bbb2cd80cd081e6eb33f01c895ada474bfd4032b780317' 
  AND token = 'p7Gspge9YuHv4VoiOR52LpPVW4ENbaeNFzhXunK/Ajk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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