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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd6065b68720e52a235ccf3a00c9ef2db520fa7219da275cb09b10c5d4f082958' 
  AND token = 'gaqLK86ec7hMR7u8Q3NUHMgrtXmSr62MOhB8L/3MDvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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