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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '070ad422742119bf8d21e3a2dd2218f1426a953a15cc42373ae76e281b579a1d' 
  AND token = 'z6NO7+ESTqFfpnpBz4BRaQPP4opjwx9WFPLrWO18lz0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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