Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b4984402692dc4cb7064bcf130bf90defe5e7b020fd97f1edfc1d86370d74400' 
  AND token = 'Po0PEKTq+4J+wC1Ke5GDQZE41OPEvcukLtgXJVEHdfw=' 
  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"
    }
  }
}