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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1e920b065b164e570192e949b34990c6a81560b6bd65816dfbb3f61b4d2e3a6d' 
  AND token = '7AbOb0ld1rM6/BgY2jXJ1aqOC5ouEJ9+e6GsHjwhX4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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