Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f587fbc6d166373604ddc71c4e6edfb4c9fb96e7184ddfb062117077461c0ecb' 
  AND token = 'cSFehNcG4DyDU4eA5PZHYNtcpd45ifPXEYq6dK7lTmk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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