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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1289dac870ab66db0c3a8182e7dca88b8c33c1cde8f28532d00a4c05a6656327' 
  AND token = 'jpwzbjcwdTMFDFz7Umf12pLt/He8+gkw4j6fTR79QNc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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