Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '75980aa7d0250e22918a174cfae67359e772dfd0133190019724eab63e3e8018' 
  AND token = 'MXyNOIcu1wl7GDlY9R3EMFkK1Eh8cehjG6ij8uhui60=' 
  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"
    }
  }
}