Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63d2d6904a821f9ed37f2b2f73e8ff163ab841b70dcb2152526aaf6907a8d9cd' 
  AND token = 'C5bZPbfqPTFazVTOxkluCqvEa7woVNBPzWIm3YtoNyE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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