Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24774859f46bc94c2734086166068fc98ecbe921ad3705f4bd97ac7064346310' 
  AND token = 'deIioBca1xDh95NIjjWvJDeDbWSfPu4txVJnBf4cRao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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