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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '090ae0b05bcb1d85c268dcc8df9e69abe2a3b9c75eaab2a363a2208f9a66a001' 
  AND token = 'n5Sp/A9shNmpDJdcr37hOQvd+0PGVAmmaa10mRLnhBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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