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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'e33eac65172edee07afc122b02533e8a4eca30c485bfbaa7af789a8603d76178' 
  AND token = 'VHPt44FsCSPFIQ1vs+5Vn/3oBQYE/HMMYae45pH9tM8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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