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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93c79143afd7382c388117b7d650f35b5a157cea41fb6d7c3908ff81ac38e6b9' 
  AND token = 'yqJHi1L+il1tEHXAkv78P4gHCdUmPh1FCweXCHB5U8g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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