Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '93e829d02080393341f2b32b85fdb416ecf19964d186e5aaa904d3f257f2df4d' 
  AND token = 'x5sEA7yNK/emp4PImp8H0cwilbXwbsnRTCz3L8xQVI0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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