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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '803eaa023735b063824160df673e8fbd0c3da923db302e56975d48e1f9004e1f' 
  AND token = '3rGScH3Sabd6BmonyLQvao6x1G6Y79Ov2eH6/fbqiNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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