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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4934094b072d91bc15c7b888f4e54b76eab9876db690470d11a507fdd272d960' 
  AND token = 'EwkbDMXURtUVjVjUb4f3EFC0Oi+L5kgxboHPDSoekuc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.01154

JSON explain

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