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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22ba85c93b829faf0852ee45a5635f132060b94d1095425bba51a87b179d4b60' 
  AND token = 'BjDnlRIpohu06QLHuXlF/oe30AUrMv0o9UoW9lkuu7w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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