Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc9b4c2e5e5b81a8fc7abe0554f28900acdf64f16170d00aed26b77b28e59adc' 
  AND token = '/N46iOmp68lufQwGkNyYjDQIqj2PEVSFCsXlylRuDgc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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