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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd05fd953a53a07db17d239447c27e4033c817d851c4adfafa2594ecdf0c9042b' 
  AND token = 'R9rU9tuzU3jtwTFT7L935G7JTv00k0smQB/Zv75EBNw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}