Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eaccea816d44f881f788ee3de19a1715b5ef73e9f6ce4bc46df47dae5173729a' 
  AND token = 'Q1QpBLRdzCY/pFQ3bIB4iIYW6BF3+HtAng4T04ditNI=' 
  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"
    }
  }
}