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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd8032174d5609935c5dcc2c7c789fb58e57c892fec73cb76a4f59b1ff284213f' 
  AND token = 'lm4RQYoJQ9tF63x877ym+n9Wm7znJgUH/997ae2t4Ck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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