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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7db165ca2380cae08af9723c5887c237c82d5e8d2606cbf60f6f9cdd24c83ae5' 
  AND token = 'iD2KumF01whRuLrxEO6rBCRcojOV4QfWI4JbvTcFNU8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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