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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f45eeffe645fe2ed3cbd0ebad852c3fabcffef52685a23ceeae7751a064a6ebb' 
  AND token = 'huzesyWjZlvHFqPCJO0dtjdZOGu1QHF/JuPlYPdy2nk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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