Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '861616de2294b2e745a557931104c212ebd989f83e1f90a0c8b4dff73e4d8ea7' 
  AND token = 'juyI/o4J7xN0SKklMpwQnSvDSLYJlRACj+2r0cbk2/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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