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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7aaa6db8c200c67de27fd5d6a010552777766f14b1f64eb22365d5f303e72f34' 
  AND token = 'KoX/D2PrwEugRKzsxr8lsT6NdZI8LWXi0hQ7lOLW5uE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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