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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c584aa5b312b6e418b208374731fe906909bac53a44302b0a73889bf2412064' 
  AND token = 'BaBcCHT2NfZYoJl2D28hdQg20+LNEMYdJF4PK8khl6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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