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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08732de4a5e6f772c98a25d7091315d30af273cf3d740fe40b1e969d3948d806' 
  AND token = 'Of938HzefgfceN0t1VG29F9n8NJu1tmGhL/sRQbuuAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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