Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '791539b26c165ec37ffcc4cfab49f6c39cc41f19fd7fa5d08ca9538dd8886ad1' 
  AND token = 'rBAapMH5UXZh5F08Nf7GXTi8REpV6v1wmXOhbPPofxc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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