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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62dcd96a530de0ef7d78b298ddd26ea28ce618e3a65e4dbca4f0bd0617773da6' 
  AND token = 'aoqwmlGsvcp/ewoOFOew0OJ42UTXR6bks2gvir0YVzs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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