Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8070a0a80afe0a6c6beaaf7ceee17d5494943d0a702c47fa2486baeda8fb8bf2' 
  AND token = 'ED678V5oEQu5pvKBY/C/uSHmWDYJcfLPvRkCxVD1R88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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