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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '86057c46d56e083be17c215460af669079127721b6eb1be9d8eba7c9b94d8961' 
  AND token = 'lYXKPid+XRlpV4Y9X7wPwzU9wVEVi7OOmQTK/C4Q/iE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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