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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '062079a735b48fef4563beb620ea9130ea87c07d02a094e7f876f26d440d0184' 
  AND token = 'KQMRRxqsQ65D6AOCK0mctqiJZQDjEi04nWarwCl9eO4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00128

JSON explain

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