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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4df74a96900f5b336b065591b6e7d7df1b11799b2cd5f5259f998947be8535ef' 
  AND token = 'hIlv46ZuIPZNPG4t60V7jEOtQymJQ6OeXNS1T853J/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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