Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '690b2af58d57c1ff4c9bbd03cbacae8a3e7aa8f6a76d9db1c0362c11f19a576d' 
  AND token = 'ra/S1/vtY8Yi19R+/Fts4W6Hy84vPFiAr5JtJSoIVao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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