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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a4a2852952d116508e0458158d3c40772c360a61c3a9fdafe336e134efaf4ad' 
  AND token = 'vlmp6j67ed0aTKUxGOs5n0zkR4Z8TsZLwp1+PdtqT0Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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