Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b2243115fa9676dece704603a94d09b1bbcf97007a07283a048488443b5f609c' 
  AND token = 'gUb6/G9sT4p2xjRgy38XyWGp45JvjXI+YdSCQQq8Ptc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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