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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4398051b98c1a84c171f6abf915ae6f4beb8ac1d3a6a1a6ac5b528cb01e31d06' 
  AND token = 'vG0a7v8cfD3gG/hNBNPffO3GY1VIli70xjiX+KdONkY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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