Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e410d0613c6f9aff444fd2dc727121f3635b2780205255735885f4706b0c1e28' 
  AND token = 'LDw9l1GpyJ/onsvOn29xDmpihGyJaowOf1txd5fwd3E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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