Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e962b182f8ca52bc1bfc2cd26459d708f803a3c17ea19c0def4f9be4e63db883' 
  AND token = 'sSmeHqSZ3AnndpRofHX5j5cA1QZUA+KMz7Z4C33hWkM=' 
  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"
    }
  }
}