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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce09a70e7a5ceb61edf8b1593a086dcc7763305b752f409363bcd2ef8f3fe82c' 
  AND token = 'NGfSiCunqEDBP/Rnqge09q1gnkIN9mK1fT7TFkADcr8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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